BMW 123d E81 enters the Milltek Workshop

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BMW 1 Series E81 123d enters the Milltek Workshop for performance exhaust development

Finally bitten the bullet and had primary cat back Milltek exhaust fitted. Exhaust is only slightly louder than stock, nicely bassy at low revs, nice howl at higher revs. Main thing I changed the exhaust for…no drone. Used to suffer nasty in cabin drone at 2300-2800 revs, now long journeys are a real pleasure instead of having to keep the revs above or below the drone band.

UPDATE This model has now been completed. Milltek have developed both twin and quad-outlet exhaust options for this car and photos of the system are available below:Original article The most powerful 1-series diesel, the E81 123d (with 204bhp), has been handed to the Milltek technicians to work their magic and produce a truly spectacular performance exhaust system. Modern diesel cars have proven very responsive to the fitment of Milltek's exhaust systems - especially in combination with a remap and we expect the 123d to be no exception.

The car will not leave our workshop until all those criteria have been met!